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Mathematics 13 Online
alones (alones):

Evaluate the following expression.

alones (alones):

\[2^3\]

OpenStudy (pphalke):

2*2*2

alones (alones):

\[2^8\]

Nnesha (nnesha):

the exponents represent how many times we should multiply the base by itself

OpenStudy (pphalke):

2*2*2*2*2*2*2

Nnesha (nnesha):

2^8 = multiply 2 by 2 (8 times) \[2*2*2*2*2*2*2*2 \] is not same as 2^3

alones (alones):

Oh blah, i got it wrong it's \[\frac{ 1 }{ 8 }\]

Nnesha (nnesha):

then the question is \[2^{-3}\] ??

Nnesha (nnesha):

there is only reason you can flip the fraction (negative exponents) \[\frac{2^{-3}}{1}= \frac{1}{2^3}\]

alones (alones):

Oh /:

Nnesha (nnesha):

by the way \[2^{-3}\] is same as \[\frac{ 2^{-3} }{ 1 }\] and yes if the answer is 1/8 then the question should be 2 to the negative 3rd power

alones (alones):

Thanks, at first i kinda got confused

Nnesha (nnesha):

easy way to deal with negative exponents change the place and sign if the `negative exponent` is in the denominator move that to the numerator and change sign |dw:1461815248800:dw|

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